Differential Calculus... College level?

Hello JongGyun Choi! My name is Lisa Krueger and I am a Khan Academy Ambassador teaching in Chicago. I would recommend that you review the course descriptions for the different levels of Calculus available through Khan Academy and compare the concepts covered to those from the college course you are attempting to waive. Hopefully this helps. Please let me know if you have further questions, comments, or suggestions. Thank you for posting and Good Luck!